Description

In the executor classes, we write to stdin via a complicated and apparently random series of cork(), uncork(), and write('\n') operations. We should figure out how much of this is actually needed.

Desired behavior/Acceptance criteria (returned value, expected error, performance expectations, etc.)

• cork continency

Completion checklist

• Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Back-end_Task/Bug_completion_checklist